From: "Mauricio Fernández" <batsman.geo@...>
Date: 2002-08-24T08:56:12+09:00
Subject: Re: Perl Exegesis 5 (good ideas for Ruby to consider?)

On Sat, Aug 24, 2002 at 08:30:17AM +0900, Dan Sugalski wrote:
> >What kind of grammars would it be able to parse? Is it LALR(1) as yacc?
> 
> I've still not worked out how far you can go with it, but you've at
> least got the power of a full recursive descent parser. (We've a BNF
> to recursive descent parser converter in the Parrot kit--at the
> moment it targets the Parse::RecDescent module for perl 5, but we're
> going to retarget it to perl 6's rule system once we've got it fully
> implemented)

Yes, I've seen the languages/ruby bit :)

After reading the exegesis, it looks to me like it will be more powerful
than a recursive-descent parser. But won't it be slower than the
traditional lexer/parser combination? We'd have to use lots of : and
:: things to avoid backtracking, and there are surely other issues as
well...

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